Just looking for some advice here tbh. I'm completely and utterly broken.

Husband's sister has end stage kidney disease, 2 failed transplants and only just begun dialysis several times a week.

He blurted to her he would get tested and is happy to support (without researching, without speaking to me). Anyways, pulled him up on his impulsiveness (usual) and he told me his sisters life matters more than me. The day after he calmed down and told me he realises it was a rash thing to say. He felt it wasn't for him.

Fast forward a few weeks, what seems like pressure from the mum, brandishing leaflets in his face, crying, guilt trip, he just out the blue told me he would be getting more info about this and of he's a match he would donate.

I'm completely blindsided. I respect the gesture but keep in mind, he's in debt, I currently run the household as he struggles to find a job, our plans to start a family will be halted (I'm mid 30s). Also, in terms of care, we are not the same size, I'm tiny compared to him, holding down a full-time job and also running the household - I don't have the emotional, financial or physical capacity to support.

I tried to voice this and he turned into a monster, kept saying his sister is dying and will be stopping treatment as she can't go through this anymore, he then went on a barrage of if you don't let me do this you are responsible for her death.

I didn't say no, I merely voiced concerns and required reassurance. To which he gave none, came across incredibly emotional and gave me a load of abuse?

How do I deal with this? He's a gentle giant usually, can be quote impulsive and I've spoke to him before about him being inconsiderate when it comes to me vs. his friends and family.

I understand and respect what he wants to do, I just don't think we are in a situation where it can be done with out extreme stress to us as individuals, our marriage and our household.

If it matters, other siblings have refused. She is a rare case, expectancy of new transplant is a mere 3 years or so if she's lucky.